circuit
291 links - and 1 categories
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Antennas : WiFi- 10 element Yagi WiFi Antenna
- A DIY project of a WiFi 10 elements Yagi antenna
[ Hits: 1428 | Votes: 7 | Rating: 6 ]
- Amateurfunkgruppe des Computer Clubs Media 2000
- The amateur radio group of the Computer Club Media 2000 want to present not only the beautiful hobby amateur radio but show also what a multi-faceted hobby it is, supporting in repairs of radios, developing their own circuits and the conversion of radio equipment. German group
[ Hits: 128 | Votes: 1 | Rating: 10 ]
- SB-200 Sleeper Tank Mods
- A Quick Overhaul to the SB-200 Tank Circuit
[ Hits: 394 | Votes: 0 | Rating: 0 ]
- ICOM IC-756Pro Receiver Noise
- If your 756 has lots of noise with crackles and sweeping heterodynes, especially noticeable on AM, it may be due to a faulty electrolytic capacitor in the noise-blanker circuit
[ Hits: 271 | Votes: 0 | Rating: 0 ]
- Circuit Lab - Online circuit simulation
- A browser based circuit simulator offering a large set of functionalities allowing to share and discuss designs
[ Hits: 528 | Votes: 1 | Rating: 5 ]
- How to Design an RF Power Amplifier
- This video will provide a foundation for understanding how power amplifier circuits work. If you are new to High Frequency Power Amplifier Circuit Design, this is the place to start.
[ Hits: 674 | Votes: 1 | Rating: 10 ]
- ZL1BPU Rotator Controller
- The ZL1BPU Rotator Controller has been designed as an add-on unit for the popular Kenpro KR-400 and Yaesu G-400 rotators. The controller consists of a small circuit board which fits inside the rotator control box
[ Hits: 628 | Votes: 0 | Rating: 0 ]
- ARDUINO Simplex Repeater Controller
- This project hereby presented is a complete HAM radio simplex 'smart' repeater, built around a Motorola GM-350/950, Arduino NANO board and a WINBOND audio recording integrated circuit
[ Hits: 1074 | Votes: 6 | Rating: 3.67 ]
- Arduino SWR and Power Meter
- The circuit is based on two AD8307 log amplifiers, which are connected to the forward and reflected ports on a directional coupler
[ Hits: 1586 | Votes: 3 | Rating: 6.67 ]
- A discharge circuit for NiMH batteries
- A discharge circuit which you could use to cycle the batteries
[ Hits: 313 | Votes: 0 | Rating: 0 ]
- Morse Code Beacon Keyer
- This circuit stores a morse code message as bits in an EPROM chip, the message controls a relay that keys a CW morse code transmitter. An Arduino processor can also be used in place of this circuit, that eliminates the need to build the circuit and program an EPROM.
[ Hits: 381 | Votes: 0 | Rating: 0 ]
- VHF-UHF Diplexer
- Diplexer is a passive device, a special filter circuit that seperates 2 different bands, not to be confused with the duplexer that usually separate 2 different frequencies on the same band.
[ Hits: 1140 | Votes: 2 | Rating: 5 ]
- Portable Morse Code Practice Oscillator
- Little circuit of a Morse Code Oscillator is presented here. Excellent for learning and teaching Morse code
[ Hits: 469 | Votes: 0 | Rating: 0 ]
- Home Made CW Paddle
- Home Made CW paddles made from a printed circuit board and a teflon mounting block while contacts are made with simple brass threaded rods.
[ Hits: 1054 | Votes: 1 | Rating: 9 ]
- The VK3YE Micro 40 DSB Transceiver
- A hombrew QRP transceiver for 40 meter band with many pictures, circuit and sound recording of some QSOs made with this Rig consisting of 5 transistor and one chip.
[ Hits: 978 | Votes: 1 | Rating: 10 ]
- Magnetic Loop RF Safety
- Notes on the intensity of RF Field calculated on magnetic loop antennas. The magnetic field intensity of a mag loop is considerably higher than the E field probably due to the inductive portion of the resonant circuit creating the radiation (magnetic) in the near field
[ Hits: 858 | Votes: 3 | Rating: 4 ]
- RF Front End Protector
- If You are using a separate receive antennas then you need a good protection circuit to eliminate the possibility of blowing out the receiver front-end while using these auxiliary receive antennas specially on low bands.
[ Hits: 178 | Votes: 0 | Rating: 0 ]
- How to make a low end SWR/ Watt Meter reading PEP power
- Building a PEP Power circuit for all analogue watt-meter
[ Hits: 1683 | Votes: 6 | Rating: 7.5 ]
- Digital SWR Meter with Arduino
- Inline RF Power & VSWR Meter. A DIY meter 0 to 30 Watt with Average and Peak. Circuit Description, Arduino Nano software code and part list to DIY your own Digital SWR Meter
[ Hits: 3358 | Votes: 17 | Rating: 5.93 ]
- 50 MHz and 28 MHz transverter
- This transverter was built in 1994 and include in this page a pdf with circuit board, and a version of this project for 70MHz.
[ Hits: 307 | Votes: 1 | Rating: 3 ]
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